EFTS 2007 Dubrovnik , CROATIA Second International Workshop on Engineering Fault Tolerant Systems

Electronically executed business processes are frequently implemented using the Business Process Execution Language (BPEL). These workflows may be in control of crucial business processes of an organization, in the same time existing model checking approaches are still immature i.e. they either seem to loose to much information during the generation of the analysis model, or the state space explosion prevents from model checking. We present a formal modeling technique for BPEL workflows including fault and compensation handling providing exact semantics with a state space size that allows for model checking. Additionally, error propagation among variables is supported so the effect of a faulty activity on the entire process can be examined.